Abstract
Acoustic measurements of near-surface bubbles generated by breaking waves were made off Whidbey Island, Puget Sound, Washington. A limited amount of data was also gathered in the open ocean off the coast of Washington. The intent of these measurements was to delineate the role of near-surface bubbles in surface backscattering, forward loss, and ambient noise at high frequencies. High resolution vertical incidence backscatter was the principal method used for determining the near-surface volume scattering strength profile attributable to bubbles. For one of the data sets low grazing angle forward loss measurements were interspersed with the vertical incidence measurements. It was clear from the vertical incidence measurements that bubbles are acoustically observable at wind speeds as low as 3 m/s and that for wind speeds greater than about 5–6 m/s the surface forward loss can become quite large (>10 dB).
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© 1988 Kluwer Academic Publishers
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McConnell, S.O. (1988). Acoustic Measurements of Bubble Densities at 15–50 kHz. In: Kerman, B.R. (eds) Sea Surface Sound. NATO ASI Series, vol 238. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-3017-9_18
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DOI: https://doi.org/10.1007/978-94-009-3017-9_18
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-7856-6
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